Mortise joint



P. ISOARDI.

MORTISE JOINT.

APPLlCATlON HLED MAY 4. 1920.

Patented Aug. 1, 1922.

squad IN VEN TOR Peter ffaardz.

iz, 4. M

A TTORNE Y UNITED STA ma IYBDABDL s mauve testamneither: s me.

Applicat ipn filed -May 4, read. Beriarm. 378,788.

To all whom it may concern Be it known that I, PETER lsoaam a citizen of the United Qtates. residing at Mr:- Cloud. in the county of Siskivou and State of California, have invented a new and useful Improvement in a Mortise Joint. of which the following is a Specifi ation.

This invention relates to a mortise joint and particularly pertains to means for con nccting members in cabinet work.

It is the principal object of the present invention to provide a joint between 'rai'ne members which will cause a series of: frame elements to be interlocked with each other and to be arranged at a desired angle to each other in a. manner to produce a very rigid joint which is not liable to break apart due to strain upon the members or to the seasoning of the material from which they are made.

The present invention contemplates the use of sets of frame members which are used to form separate walls of a ho): or other like structure and which members are formed with mortise and tenon members by which the various elements of each wall will be in terlocked and the elements of the several walls also.

The invention is illustrated by way of example in the accompanying drawings. in which:

Fig. 1 is a fragmentary view in perspective showing the corner of a box structure formed according to the principles of the present invention.

Fig. 2 is a view in perspective showing two of the wall elements and the manner in which they interlock.

In the drawings. i and 11 indicate two walls of a structure adapted to be joined at right angles to each other. These walls are of composite formation being built up of slats 12. The ends of the slat are each formed with a dove-tailed tenon l3 and a mortise 14. The opposite faces of the tenons are formed as continuations of the main faces of the slats. while the top and bottom faces converge toward the base of the tenon. The mortise portion is formed by opposite side members 15 and 16. The member 16 is spaced from one of the inclined side faces of a tenon in a manner to receive a mortise side 15. It will thus be evident that the adjacent faces of the mortise are inclined to agree with th tapered Faces of the tenous and that the backs of mortise portions 16 are straight to agree with the flat upper edges of the slats and the top faces of the mortise portions 15. The structure is built up by taking one of the slats 12 and disposing it with its tenon lowermost. A slat 12 of the adjacent corner wall is then arranged with its tenon lowermost and this tenon is slipped into the mortise 14 of the lower slat in.the direction of the arrow -a as indicated in Fig. 2. This will expose a mortise 14 at the top of the slat previously described and it will now be possible to place the tenon 13 of another slat in this mortise and thus successively build up the two walls of a structure with a rigid interlocking joint. The lower tenon 13 of the lowermost slat and the upper mortise of the uppermost slat will require narrow slat portions 17 and 18, respectively. These members will complete the sides of the box and when locking screws 19 are passed through the end slats 17 and 18 and into the adjacent wall slats 12 the entire structure will be locked securely. Veneer strips 20 may then be used to cover the ends of the slats and conceal the screws. It will also be understood that the mortise and tenon joints as well as the edge joints of the slats are glued.

It will thus be seen that the framing structure here disclosed provides simple means by which adjacent walls of a box or like article may be rigidly secured to each other, said walls being formed of slats which will be rigidly interlocked with slats of the opposite wall and also interlocked with the various slats of each of the separate walls and it will be further noted that by a simple locking means the joint will be secured.

While I have shown the preferred form of my invention as now known to me, it will be understood that various changes in the combination, construction and arran ement of parts may be made by those skille in the art without departing from the spirit of the invention as claimed.

Having thus described my invention, what I claim and desire to secure by Letters Patent. is:

box structure comprising a side wall formed of superposed boards of equal width and another side wall complementary thereto having boards equal in width with the lirstnameil boards. with the exception of til edge boards which are of half the width of the remaining boards, thus causing the joints between the boards of adjacent si'dsi to be in staggered relation to each other, mortise and tenon elements formed gt the op; posite ends of said boards whereby each board with the exception of the narrow edge boards, Will interlock with the ends of two adjacent boards of the adjoining Wall, fastening' means coiinterset in the narrow boards to engage the abutting board of the 10 same well, and cover strips extending along the edges of the? wfills fasteni ng means. In tQSIZ l IQQILY whereof I have hereunto set- 'my hand in the prnce of two subscribing vvitnesses.

ISOARDI PETER.

Witnesses: I i

JOHN Pllneoenmo,

T. W. MURRAY. 

